search the glossary

A pressure sensitive construction made so that once applied to a surface, it will show evidence of tampering whenever that occurs. Typical labels can be removed from a product, but are altered in appearance so that they cannot be used on another product. Moreover, upon removal from the product, the label also leaves a pattern showing the evidence of tampering.

Destructive label. A pressure-sensitive construction made with a face material having a low strength so that attempted removal of a label made from this stock will usually result in destruction of the label.

The ability of a tape to resist tearing after a tear has been started by cutting or nicking of the edge

The force required to tear a specimen under standardized conditions in an instrument designed to simulate in a general way the tearing encountered under use conditions.

Tearing

A sideways sliding of the tape layers, one over the other, such that the roll looks like a funnel or telescope.

The maximum amount of stress that a material can withstand before failure.

Tensile strength measured at right angles to the length.

Tensile strength measured parallel to the length of the tape. Unless otherwise specified, tensile strengths are measured in the machine direction.